title: Interhemispheric vs. stimulus-response spatial compatibility effects in bimanual reaction times to lateralized visual stimuli.
abstract: In the present study, we tested right- and left-handed participants in a Poffenberger paradigm with bimanual responses and hands either in an anatomical or in a left-right inverted posture. We observed a significant positive crossed-uncrossed difference (CUD) in RTs for both manual dominance groups and both response postures. These results rule out an explanation of the CUD in terms of stimulus-response spatial compatibility (SRSC) and provide convincing evidence on the important role of interhemispheric callosal transfer in bimanual responding in right- as well as left-handed individuals.
authors.affiliation: Division for Clinical and Cognitive Neurosciences, Department of Neurology Medical Faculty, RWTH Aachen University Aachen, Germany.
authors.forename: Antonello
authors.initials: A
authors.lastname: Pellicano
authors.forename: Valeria
authors.initials: V
authors.lastname: Barna
authors.forename: Roberto
authors.initials: R
authors.lastname: Nicoletti
authors.forename: Sandro
authors.initials: S
authors.lastname: Rubichi
authors.forename: Carlo A
authors.initials: CA
authors.lastname: Marzi
keywords: corpus callosum; crossed-uncrossed difference (CUD); interhemispheric transmission; left handedness; poffenberger paradigm; stimulus-response spatial compatibility